package com.pr.util;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

/**
 * @description:
 * @projectName:SpringSkill
 * @see:org.pr.springskill.util
 * @author:LXC
 * @createTime:2024/4/22 10:16
 * @version:1.0
 */
@Component
public class SpringContextUtil  implements ApplicationContextAware {
    private static ApplicationContext applicationContext; // Spring应用上下文环境

    /**
     * 实现了ApplicationContextAware 接口，必须实现该方法；
     * *通过传递applicationContext参数初始化成员变量applicationContext
     * */
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        SpringContextUtil.applicationContext = applicationContext;
    }

    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }

    @SuppressWarnings("unchecked")
    public static <T> T getBean(String name) throws BeansException {
        return (T) applicationContext.getBean(name);
    }
}
